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comparison src/fschmidt/db/pool/NestedConnection.java @ 68:00520880ad02

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add fschmidt source
author Franklin Schmidt <fschmidt@gmail.com>
date Sun, 05 Oct 2025 17:24:15 -0600
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67:9d0fefce6985 68:00520880ad02
1 /*
2 Copyright (c) 2008 Franklin Schmidt <fschmidt@gmail.com>
3
4 Permission is hereby granted, free of charge, to any person obtaining a copy
5 of this software and associated documentation files (the "Software"), to deal
6 in the Software without restriction, including without limitation the rights
7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 copies of the Software, and to permit persons to whom the Software is
9 furnished to do so, subject to the following conditions:
10
11 The above copyright notice and this permission notice shall be included in
12 all copies or substantial portions of the Software.
13
14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20 THE SOFTWARE.
21 */
22
23 package fschmidt.db.pool;
24
25 import java.lang.reflect.InvocationHandler;
26 import java.lang.reflect.Method;
27 import java.sql.Connection;
28 import java.sql.SQLException;
29 import java.sql.Statement;
30 import java.util.List;
31 import java.util.ArrayList;
32 import java.util.Set;
33 import java.util.HashSet;
34 import org.slf4j.Logger;
35 import org.slf4j.LoggerFactory;
36 import fschmidt.db.DbDatabase;
37 import fschmidt.db.DbObject;
38 import fschmidt.db.DbKey;
39 import fschmidt.db.DbObjectFactory;
40 import fschmidt.db.SQLRuntimeException;
41 import fschmidt.db.extend.DbDatabaseExt;
42 import fschmidt.db.extend.DbTableExt;
43 import fschmidt.db.extend.DbTransaction;
44 import fschmidt.db.extend.DbRecordExt;
45 import fschmidt.db.extend.FilterDatabase;
46 import fschmidt.db.util.OverridingProxy;
47 import fschmidt.util.java.Stack;
48 import fschmidt.util.java.ArrayStack;
49
50
51 final class NestedConnection {
52
53 private static class MyOverridingProxy extends OverridingProxy<Connection,NestedConnection> {
54
55 MyOverridingProxy() {
56 super(Connection.class,NestedConnection.class);
57 }
58
59 protected InvocationHandler newInvocationHandler(Connection obj,NestedConnection override) {
60 return new MyOverridingInvocationHandler(obj,override);
61 }
62
63 protected class MyOverridingInvocationHandler extends OverridingInvocationHandler {
64
65 MyOverridingInvocationHandler(Connection obj,NestedConnection override) {
66 super(obj,override);
67 }
68
69 public Object invoke(Object proxy,Method method, Object[] args)
70 throws Throwable
71 {
72 if( !method.getName().equals("close") )
73 override.setUser();
74 return super.invoke(proxy,method,args);
75 }
76
77 }
78
79 }
80
81 private static final MyOverridingProxy factory = new MyOverridingProxy();
82
83 private final PooledConnection pooledCon;
84 final Connection proxyCon;
85 final Exception initException = new Exception("connection constructed in "+Thread.currentThread());
86 private boolean isClosed = false;
87 private final String user;
88
89 NestedConnection(PooledConnection pooledCon,String user) {
90 this.user = user;
91 this.pooledCon = pooledCon;
92 proxyCon = factory.newInstance(pooledCon.con(),this);
93 }
94
95 void setUser() throws SQLException {
96 pooledCon.setUser(user);
97 }
98
99 protected void checkClosed()
100 throws SQLException
101 {
102 if( isClosed )
103 throw new SQLException("connection is closed");
104 }
105
106 public void setAutoCommit(boolean autoCommit)
107 throws SQLException
108 {
109 checkClosed();
110 pooledCon.setAutoCommit(autoCommit);
111 }
112
113 public void commit()
114 throws SQLException
115 {
116 checkClosed();
117 pooledCon.commit();
118 }
119
120 public void rollback()
121 throws SQLException
122 {
123 checkClosed();
124 pooledCon.rollback();
125 }
126
127 public void close()
128 throws SQLException
129 {
130 checkClosed();
131 isClosed = true;
132 pooledCon.close(this);
133 }
134
135 public boolean isClosed() {
136 return isClosed;
137 }
138
139 }